Interesting announcement by Oracle about a BPEL based integration between PeopleSoft CRM 9.0 and Customer Data Hub. This makes PeopleSoft an attractive option for existing PeopleSoft customers who are considering CRM options. How this will play out w.r.t to Siebel CRM is to be seen. The article can be viewed here.
It would not be surprising if an AIA based integration between Siebel and PeopleSoft were to be announced soon.